Koosalagoopagoop also nicknamed Koosy or Koos is Dee Dee's imaginary friend who is a rainbow dragon from an imaginary world called Koosland. Dee Dee is always going into her room to go and visit him in his imaginary world which she enters via a portal of pink hearts and magic that Koosy can open up or can be accessed from the heart marking on his stomach. He was voiced by Dom DeLuise.